When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
So you have,
53 - TP circuit above maximum voltage.
and
98 - Hard fault present.
Hard fault means the sensor is currently out of range.
A memory code means it was out of range at one time.
The code 53 indicates the TP sensor is exceeding the maximum expected voltage.
If this code is received during the KOEO test, disconnect the harness connector from the TP sensor.
If the code 63 is generated, replace the TP sensor.
If the code 53 returns, repair the short to voltage in the TP sensor wire.